Phantasm for Frostbite

NEW: When Anna sacrifices her life for her sister, something goes terribly wrong—Elsa unleashes a wrathful vengeance, killing Hans, and inadvertently causes a catastrophic maelstrom. Years later they awaken, but in a world far in the future, where monsters and guardians take the skies. Will they adapt to this wonderful and frightening new world, or perish at its claws?